Read Sharp PN-R903 (serv.man7) User Guide / Operation Manual online
54
E
Troubleshooting
If you are experiencing any problem with your display, before
calling for service, please review the following troubleshooting
tips.
There is no picture or sound.
calling for service, please review the following troubleshooting
tips.
There is no picture or sound.
• Is the power cord disconnected? (See page 13.)
• Is the main power switch off? (See page 16.)
• Is the monitor in standby mode (the power LED illuminating
• Is the main power switch off? (See page 16.)
• Is the monitor in standby mode (the power LED illuminating
in orange)? (See page 16.)
• Make sure correct input mode is selected. (See page 18.)
• If any external equipment is connected, make sure the
• If any external equipment is connected, make sure the
equipment is operating (playing back).
Remote control does not work.
• Are the batteries inserted with polarity (+,-) aligned? (See
page 15.)
• Are the batteries exhausted?
• Point the remote control unit toward the monitor’s remote
• Point the remote control unit toward the monitor’s remote
control sensor. (See page 15.)
• Is the menu display hidden or is operation disabled? (See
page 32.)
Sound from left and right speakers is reversed.
Sound is heard from only one side.
• Are audio cables connected properly?
• Check the setting of BALANCE for AUDIO menu. (See
• Check the setting of BALANCE for AUDIO menu. (See
page 24.)
There is a picture but no sound.
• Is the sound muted?
• Make sure the volume is not set to minimum.
• Are audio cables connected properly?
• Is the setting of AUDIO SELECT on the SETUP menu
• Make sure the volume is not set to minimum.
• Are audio cables connected properly?
• Is the setting of AUDIO SELECT on the SETUP menu
correct? (See page 24.)
Unstable video.
• The signal may be incompatible.
• Try the automatic screen adjustment when the
• Try the automatic screen adjustment when the
D-SUB[RGB] or DVI-I (analog) are used.
The video from the PC/AV HDMI input terminal does not
appear properly.
• Is the setting for HDMI1 or HDMI2 of INPUT SELECT on
the SETUP menu correct? (See page 24.)
• Is the HDMI cable HDMI standard compliant? The monitor
will not work with cables that are not standard compliant.
• Is the input signal compatible with this monitor? (See page
58.)
The video from the DVI-I input terminal does not appear
properly.
• Is the setting for EDID SELECT (DVI-I) of INPUT SELECT
on the SETUP menu correct? (See page 24.)
• Is the input signal compatible with this monitor? (See page
58.)
• Turn off the power to the connected equipment and then
turn the power on again.
• If the monitors are connected in a daisy chain, turn off the
power to all the monitors connected in a daisy chain and
then turn the power on again.
then turn the power on again.
The video from PC/AV D-Sub input terminal does not
appear correctly.
• Is the setting for D-SUB of INPUT SELECT on the SETUP
menu correct? (See page 24.)
• Is the input signal compatible with this monitor? (See page
58.)
The video from the DisplayPort does not appear properly.
• Is the input signal compatible with this monitor? (See page
58.)
Control buttons do not work.
There is no picture.
• Load noises from outside may be interfering with normal
operation. Turn off the power and turn it on after waiting at
least 5 seconds, and then check the operation.
least 5 seconds, and then check the operation.
The input mode changes automatically.
• When the AUTO INPUT CHANGE is ON and no signal
is present in a selected input mode, the AUTO INPUT
CHANGE automatically changes the selected mode to a
mode where a video signal is present.
CHANGE automatically changes the selected mode to a
mode where a video signal is present.
The input mode may change in the following cases:
- When a computer is in standby mode.
- When video play is stopped with a playback device.
- When video play is stopped with a playback device.
Power LED flashes red.
“STATUS [xxxx]” appears in the corner of the screen.
• Hardware has a problem. Turn off the monitor and request
repair from your SHARP dealer.
(When STATUS ALERT is set to OSD & LED. This varies
depending on the setting.)
(When STATUS ALERT is set to OSD & LED. This varies
depending on the setting.)
When “AUTO DIMMING” is displayed.
• When the internal temperature of the monitor rises
excessively, the brightness of the backlight automatically
decreases in order to prevent a further temperature rise. If
you attempt to use
decreases in order to prevent a further temperature rise. If
you attempt to use
to adjust the brightness while
the monitor is in this state, “AUTO DIMMING” is displayed
and you cannot change the brightness.
and you cannot change the brightness.
• Remove the cause of the excessive temperature rise.
The monitor makes a cracking sound.
• You may occasionally hear a cracking sound from the
monitor. This happens when the cabinet slightly expands
and contracts according to change in temperature. This
does not affect the monitor’s performance.
and contracts according to change in temperature. This
does not affect the monitor’s performance.
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